Mature embryo, Biology

Assignment Help:

Mature Embryo

A typical dicotyledonous embryo, as seen in a median longitudinal section, consists of an embryonal axis having two broad cotyledons. The portion of embryonal axis above the level of cotyledons is termed epicotyl which terminates in the plumule or stem tip. The cylindrical portion below the level of cotyledons is called the hypocotyl which terminates at the lower end in the radicle or root tip. The root meristems is covered by a well defined root cap.

The embryo of monocotyledons, possesses only one cotyledon. The grass embryos is highly specialized and has received a great deal of attention. It has a single cotyledon in the form of scutellum, which appears to be laterally attached to the embryonal axis. At its lower end the embryonal axis has the radicle and root cap, enclosed in an undifferentiated part of the embryo called coleorhiza. On one side the coleorhiza is given out a small outgrowth called the epiblast. The portion of embryonal axis above the level of attachment of the scutellum is termed epicotyl. It has a shoot apex with some leaf primordia, enclosed in a hollow foliar structure called the coleoptile.


Related Discussions:- Mature embryo

Functions of plasma proteins, Functions of Plasma Proteins The protein...

Functions of Plasma Proteins The proteins of the plasma serve several important functions. They exert osmotic pressure varying from 25 to 30 mm Hg, which regulate

Define equilibrium conditions in multicomponent systems, Define Equilibrium...

Define Equilibrium Conditions in Multicomponent Systems? This chapter applies equilibrium theory to a variety of chemical systems of more than one component. Two different appr

How does the inflammation mechanism work, Q. How does the inflammation mech...

Q. How does the inflammation mechanism work? When some tissue injury other vasoactive and occurs histamine substances (called mediators of inflammation) are released, they caus

Enzyme, Starch is a large molecule consisting of between 300 to 500 glucose...

Starch is a large molecule consisting of between 300 to 500 glucose molecules joined together.  A glucose molecule is only very small, consisting of 24 atoms.  Cellophane is simila

Protein requirement during congestive cardiac failure, Q. Protein Requireme...

Q. Protein Requirement during congestive cardiac failure? Protein: The protein requirements remain the &me as healthy adult men and women, About 0.8 - lg of protein per kg

What are analogies for mitochondria, What are analogies for mitochondria? ...

What are analogies for mitochondria? Well, as you know, the mitochondria are the producers of most of a cell's energy and the nucleolus makes ribosomes. The cell wall is only i

How could an adult lose billions of cells, How can an adult lose billions o...

How can an adult lose billions of cells from all parts of the body each day and still survive?

Symmetry - metazoa, Symmetry - Metazoa All living organisms have some ...

Symmetry - Metazoa All living organisms have some body shape and form. The general body plan of animals may be organized in one of several ways . Arrangement of parts or organ

Objective of the law of contract, The law of contract is that the branch of...

The law of contract is that the branch of law which determines the circumstances in which promises made by the parities to a contract shall be legally binding on them. Its rules de

Explain the role of the carbon atom, Each of the properties that follow is ...

Each of the properties that follow is characteristic of the carbon atom. In each case, indicate how the property contributes to the role of the carbon atom as the most important at

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd